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Companies using Postini by Google LLC in 2025

As of 2025, 3,292 verified companies use Postini – across industries, company sizes, and geographies. This is real, verified data. Whether you’re looking to analyze the market, build a target list, or get a sales edge – this is your starting point.

https://www.google.com

What is Postini by Google LLC?

Postini by Google was a cloud-based email security and archiving service. It was widely used to filter spam and malware, enforce email policies, and archive email communications for compliance purposes. Industries that relied on Postini included businesses of all sizes, as well as government agencies and educational institutions, utilizing it primarily within their IT and security departments to protect against email-borne threats.

Last updated date

August 17, 2025

Number of Companies using

3,292

The majority are based in the

United States

Most common industry?

Manufacturing

Postini’s sample user list in 2025

Company Name

Country

Industry

Employees

Revenue

Product

Microsoft

United States flag
United States

Database & File Management Software

228000

$270B

Postini

IBM

United States flag
United States

Custom Software & IT Services

270300

$62.8B

Postini

UnitedHealth Group

United States flag
United States

Insurance

400000

$410.1B

Postini

Costco Wholesale

United States flag
United States

Department Stores, Shopping Centers & Superstores

333000

$268.8B

Postini

Accenture

Ireland flag
Ireland

Custom Software & IT Services

791000

$68.5B

Postini

Cigna

United States flag
United States

Insurance

73500

$247.1B

Postini

InterContinental Hotels Group

United Kingdom flag
United Kingdom

Lodging & Resorts

385000

$4.9B

Postini

Wells Fargo

United States flag
United States

Banking

215332

$82.3B

Postini

CISCO

United States flag
United States

Telecommunication Equipment

90400

$55.6B

Postini

Oracle

United States flag
United States

Custom Software & IT Services

159000

$55.8B

Postini

Showing 10 of 3,292 results

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We have data on 3,292 companies that use Postini. Our Postini customers list is available for download and comes enriched with vital company specifics, including industry classification, organizational size, geographical location, funding rounds, and revenue figures, among others.

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Postini users and customers by country

United States flag
United States
United Kingdom flag
United Kingdom

2.6K Companies

Canada flag
Canada

2.6K Companies

Germany flag
Germany

2.6K Companies

Japan flag
Japan

2.6K Companies

Where Postini Shows Up Most

Postini is used across a wide range of sectors:

Manufacturing

Business Services

Software

Finance

Retail

From lean startups to global enterprises, Postini’s footprint is wide, and that means opportunity.

sectors

How It Works

It’s everything you wish outbound was—automated, precise, and scalable.

  • Landbase finds and qualifies your ideal prospect data automatically
  • Landbase deploys specialized AI agents to generate and run high-converting campaigns
  • Landbase executes across all channels, handling all the technical complexity behind the scenes.
  • Your pipeline fills up. You get to focus on strategy, not busywork.

Trusted by High-Performing GTM Teams

Join the teams using Landbase to:

  • Eliminate manual prospecting
  • Fill pipeline faster
  • Win against competitors
  • Built for SDRs, AEs, RevOps, and GTM Leaders
  • Powered by AI. Delivered with Speed

This data is updated on August 17, 2025

Postini by Google was a cloud-based email security and archiving service.

It was widely used to filter spam and malware, enforce email policies, and archive email communications for compliance purposes.

Businesses of all sizes, government agencies, and educational institutions.

IT and security departments to protect against email-borne threats.

As of 2025, 3,292 verified companies use Postini.